java - why instead of letter 'ת' (hebrew) typed the character ', when i trying to simulating the 'ת' key press?

Question

so, i'm i writting a program in java, and i need to similate the 'ת' key pressing, i changing the keyboard input language to hebrew and when i trying to simulate the 'ת' key pressing the written character is ',' (sometimes), why? and how i fixing it to write the 'ת' character?

The code snippet:

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;


public class Test extends JFrame{
    private static Robot robot;



    public static void main(String[] args) {
        try {
            robot = new Robot();
        } catch (AWTException e1) {
            e1.printStackTrace();
        }

        JFrame win = new JFrame();
        win.setSize(200,100);
        JPanel panel = new JPanel();
        JButton button = new JButton("simulate");
        final JTextField textField = new JTextField();
        textField.setPreferredSize(new Dimension(100, 30));
        panel.add(textField);
        panel.add(button);
        win.add(panel);
        win.setVisible(true);
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                textField.requestFocus();
                robot.keyPress(0X2C);
                robot.keyRelease(0X2C);
            }
        });


    }
}

I have tried also to simulate the key code: KeyEvent.COMMA (also, dosen't work like i need..)

My operation system: Windows 10.

Please help.

Thank you.

Answer 1

I found this question and answer and there seems to be some solution in the top answer...

How to make the Java.awt.Robot type unicode characters? (Is it possible?)

Please try this (code available from https://github.com/johanwitters/stackoverflow.swing-hebrewkey)

package com.johanw.stackoverflow.hebrewkey;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

public class Test extends JFrame{
    private static Robot robot;

    public static void main(String[] args) {
        try {
            robot = new Robot();
        } catch (AWTException e1) {
            e1.printStackTrace();
        }

        JFrame win = new JFrame();
        win.setSize(200,100);
        JPanel panel = new JPanel();
        JButton button = new JButton("simulate");
        final JTextField textField = new JTextField();
        textField.setPreferredSize(new Dimension(100, 30));
        panel.add(textField);
        panel.add(button);
        win.add(panel);
        win.setVisible(true);
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                textField.requestFocus();
//                pressUnicode(robot,0X5D4);
                pressUnicode(robot,0X2C);
/*
                robot.keyRelease(0X2C);
                robot.keyRelease(0X2C);
*/
            }
        });


    }

    public static void pressUnicode(Robot r, int key_code)
    {
        r.keyPress(KeyEvent.VK_ALT);

        for(int i = 3; i >= 0; --i)
        {
            // extracts a single decade of the key-code and adds
            // an offset to get the required VK_NUMPAD key-code
            int numpad_kc = key_code / (int) (Math.pow(10, i)) % 10 + KeyEvent.VK_NUMPAD0;

            r.keyPress(numpad_kc);
            r.keyRelease(numpad_kc);
        }

        r.keyRelease(KeyEvent.VK_ALT);
    }
}